First-order formalism and dark energy

DOI10.1016/J.PHYSLETB.2005.12.031zbMATH Open1247.83245arXivastro-ph/0512197OpenAlexW2079523864MaRDI QIDQ453982

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Publication date: 30 September 2012

Published in: (Search for Journal in Brave)

Abstract: This work deals with cosmological models driven by real scalar field, described by standard dynamics in generic spherical, flat, and hyperbolic geometries. We introduce a first-order formalism, which shows how to relate the potential that specifies the scalar field model to Hubble's parameter in a simple and direct manner. Extensions to tachyonic dynamics, and to two or more real scalar fields are also presented.

Full work available at URL: https://arxiv.org/abs/astro-ph/0512197

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